Comment by pcblues

For a while, I programmed while walking on a mini-laptop. Nice walking paths where I lived. I was on a hobby project and wanted to spend any minute on it. It wasn't pretty. I kept trying to design a contraption I could wear on my shoulders that worked like a laptop desk.

I also attached a laptop to a treadmill at home, but the static electricity from the rubber mat kept zapping the laptop.

The best result was a laptop on an exercise bike. But the bike couldn't have a high resistance or I would lose concentration.